Shoe-trimming machine



Nov. 20, 1923 A. BATES SHQE TRIMMING MACHINE Filed Feb. 26. 1919Patented Nov. 20, 1923.., I

UNITED? STATES,

74,398 PATENT OFFICE.

ABTEUR BATEB, OF LEICESTEB, ENGLAND, ASSIGNOE TO UNITED SEOE MACHINERYCOBPOBATION, OF PATEBSON, NEW JEBSEY, A COBPORATION OF NEW J'EBSEY.

SHOE-TBIMHING MACHINE.

Application filed February 26, 1919. Serial Io. 279388.

To all "whom it may concem:

Be it known that I ARTHUR BATES, a subject of the King-of rreat Britain,residing at Leicester, in the county of Leicester, England, haveinvented certain new'and useful Improvements in dhoe-Trimming Machines;and I do hereby declare the following to be a full, clear, and exactdescription of the invention,.such as will enable others skilled in theart to which it appertains to make and use the same.

This invention relates to shoe trimming machines and more particularlyto machines for shaping to proper size and contour such projectingportions of the shoe bottom as help to form the extension in thecompleted shoe. The illustrative embodiment of the invention shows aConstruction by which the contour of the part of the flange which istrimmed is determined by the contour of an outsole that has been trimmedor otherwise shaped as to Outline prior to its attachment to the Shoe.

One method of making welt shoes is disclosed in Letters Patent of theUnited States t William H. Hooper Nos. 861,178 and 861,180, dated July23, 1907. By practicing this method the usual rough-rounding operationon the outsole is eliminated because an outsole of final `outline isattached instead of a block outsole. The welt then projects laterallybeyond the periphery of the outsole the projecting portion thereofconstituting one example of what is hereinafter termed a marginalextension, and it becomes necessary to trim such extension to the sizeand contour of the previously shaped outsole before the edge of the soleand welt can properly be finished.

One object of the present invention is to provide speedy and accuratemeans for performing a trimming operation on the outturned flanges ofShoe bottoms, to Supplement such Operations as those included in' wllreadily be understood by those 'skilled n the art, the inventioncomprises the features and combinations of parts hereinafter descrbedand particularly pointed out in the appended claims. The preferred formof the invention is llustrated in the accompanying drawings in which:

Fgure 1 is a side elevation of the machine with the frame partlvremovedto disclose the parts inside it. In this view the knife 'and gegeare both in their raised positions section; and

Fig. 3 is a detail, in elevation, of a ortion of a welt shoe assembledby the ooper method with the knife and gage in working position thereon.

In the illustrative embodiment of the invention the machine is shown asa small bench machine. The frame comprises a column 2 provided with ahollow head 4 having an open forward end. v The Operating tools pro ectfrom this open end and access. to them is gained by lifting a pivotedcover plate 6. The trimming knife 8 is of arcuate form and s clamped 111a knife holder 10 formed by an arm projecting forwardly from anoscillatory block 12 carried by horizontal trunnions 14 journaled in thesides of the hollow head 4. V

The block 12 is rocked back and forth on its trunnions and consequentlythe knife 8 is oscillated, it being understood that the center ofcurvature of the knife is at the axis about Where the block 12 rocks.The mechanism for rocking the-block 12 is similar in principle to thatdisclosed in prior Letters Patent of the United States No. 1,139,727,dated May 18, 1915, to Wm. T. B. Roberts, to which reference may be had.Since this knife actuating mechanism is not claimed herein it willsuflice to say that the block 12 has a hollow center in which is seatedthe rectangular head 16 of a stub shaft 18. The head is fast on avertical pin 20 in the block 12 and the stub shaft is seated in a,conical boss 22, in the position indicated by dotted lines in Fig'. 1,on the forward end of the driving shaft 24, driven by a belt runningover a pulley 26. The action is the same as described in said priorpatent last referred i of U-shaped form having its legs Secured to theframe by screws, as shown in Figs. l

and 2. This bed is preferably tapering in cross-section to enable it toenter the welt crease and support the' portion of the shoe which formsthe out-turned flange (see Fig. 3) but the bed 28 is merely a supportand cutting block and acts in no way as a gage to determine the path ofthe cut made by the knife 8. y

The path of the trimming cut to be made is determined by a gage 30. Thelatter s preferably U-shaped so that its legs 82 may be pivoted on thetrunnions 14: inside the hollow head 4 (see Fig. 2). One of the legs isprovided with a depending arm 34 to which is attached.one end of atension spring 36 the other end of which is se` curedto a pin 38extending loosely through the hollow head 4. A wing nut 40 on thethreaded pin permits adjustment of the ten ,sion of the spring whichacts normally to hold the gage 30 down in operative position near thecutting bed 28. Tn -order to raise the gage to an inoperative positionto permit insertion and removal of the work a hand lever 4:2, pivoted onthe hollow head 4, is provided with a cam head 44: adapted to engage thearm 34 and force it to the left, as illustrated in Fig. 1.

The gage member also constitutes a novel form of presser-foot by reasonof having a roller 46 arranged to bear on the margin of the previouslyshaped shoe element by which the line of trimming is determined. Preterably the depth of the gage below the bottom of the roller would beless than the th'ickness of the stock above that to be trimmed, so thatthe downward Stress of the gage would be sustained by the roller and thepart on which it rolls instead of by the part being trimmed. Thiscondition avoids a drag on the part being trimmed, enables the latter topass under the gage without likelihood of catching thereon and minimizesthe frictional resistance to the feeding of the work. The level of thegage and presser-foot Will therefore be determned not by the part to betrimmed but by the previously shaped part superposed thereon, and sincethe part to be trimmed will not have any duty to perform it will notmilitate against uniformly good work by reason of lacking firmness ofbody or smoothness of surface.

aeraeae tion roll 46 of which rides on the face of the sole, the wholebeing held yieldingly to the Work by the spring' 36. The shoe is fed bythe operative and by maintaining contact with the gage the Welt israpidly and ac curately trimmed to the contour of the outsole.

l`hose skilled in the art will recognize that trimming Operations otherthan that illustrated in F ig. 3 can be performed with facility. Forexample, the machine may be used to trim the middle sole of a McKay shoeto the contour of its shaped outsole as illustrated by dotted lines inFig. l. In fact the machine is useful wherever it is desirable to trimthe margin of any part of a shoe bottom which projects beyond the last,herein termed a marginal extension, to the contour of another part ofthe shoe.

The nature and scope of the present in- Vention having been indicatedand the preferred embodment of the invention having been specificallydescribed, what is claimed as new is 1. A shoe-trimming machinecomprising a cutting bed, a knife arranged to cut against said bed totrim surplus material from a marginal extension projecting beyond theedge of a sole lying on said extension, and a gage arranged to engagethe edge of such sole to determine a course of trimming.

2. A shoe-trimming machine comprising a cutting bed formed to projectinto the crease formed by the upper and a marginal extension of a shoe,a knife arranged to cut against said bed to trim surplus material fromsaid marginal extension, and a gage arranged to coact With the edge of asole lying on said marginal extension to detet'- mine a course oftrimming.

3. A shoe-trimming machine comprising a cutting bed formed and arrangedto en gage the crease side of a marginal extension projecting from thecrease of a shoe, a knife arranged to cut against said bed to trimsurplus material from said marginal extension, and a gage arranged toclear said marginal extension and engage the edge of a sole lyingthereon and to permit said edge to approach so closely to the knife thatsaid extension will be trimmed substantially to said edge.

4. A shoe-trimming machine comprising a cutter for trimming surplusmaterial from a marginal extension projecting from the crease of a shoe,means for sustaining 1,474,see

tially in tangential relation to the field of trimming so that themarginal extension will be trimmed to the contour of the sole.

5. A Shoe trimm'ing machine having, in comb nation, a Shoe support, agage sup'- ported by the face of the outsole and having a hearing on itsedge, and a cutter for trim ming an out-turned flan e which lies abovethe outsole arranged a jacent to the sole edge engaging position of saidge. I

6. A shoe-trimming machine aving, in combination, a support for thecrease side of the marginal extension of a shoe, a cutter arranged totrim said extension, and a gagearranged to cooperate with the periphery`oi the outsole so that the latter will clear said cutter.

7. A machine of the character described comprising a work-bed forengaging one face of a marginal extension projecting beyond theperiphery of the outsole of a shoe, a' knife arranged to cnt againstsaid bed to trim said extension, and a gege arranged to bear on saidperiphery so as to keep ,the outsole from intersecting the lines oftravel of the knife.

8. A shoe-trimming machine comprising cooperative members arranged toclamp superposed layers forming the bottom of a V shoe, means arrangedto trim surplus material from the marg'in of one of such layers, andmeans arranged toengage the periphery of another one of such layers todetermine a course of trimming. v

9. A shoe-trimming machine comprising a cutting bed and a cutterarranged to cooperate therewith to trim sui-plus material from themarginal extension of a Shoe bottom, an edge-gage arranged to engage theperiphery of the Shoe bottom to determine a course of trimming, andmeans carried by said edge-gage also to cooperate with said cutting bedto clamp the work.

10. A shoe-trimmin machine comprising a bed for supporting t e marginalextension of a shoe, a cu-tter arranged to trim a layer of one contouraccording to the previously' defined contour of another layer inconfronting relation thereto, and a gage arranged to engage the edgethat forms the contour of said other layer so as to determine a courseof trimming according to said previously defined contour and so astopreserve the letter.

11. A shoe-trimming machine comprising a cuttin bed, means arranged tocooperate therewit to clamp superposed layers including an outsoleSecured te a shoe, a trimming cutter arranged to trim surplus materialfrom one of said layers other than said outsole, and a gage arranged to'engage the edge of the outsole to wntrol such trimming so as to preservethe contour of the outsole.

12. A shoe,-trimming machine wmprising.

awork-support Iormed and' arranged to engage the crease side of amarginal extenson projecting from' the crease of a shoe, a gage outsole.

13. A shoe-trimming machine comprising. cooperative clampingmembersarranged to clamp the outsole and another shoe element formng amarginal extension projecting from the body of a shoe, means arranged tooperate on said other element, and a age carried by one of said clam ingmem ers and arranged to engage the e e of the outsole to keep the latterout o 'the field of operation of said means.

14. A shoe-trimming machine comprisinga work-support arranged to supporta marginal extension projecting from the body of a shoe, spring-stressedclamping means arranged to engage the face of an outsole lying on. saidmarginal extension so as to exercise' its clamping action against said.work-support, means arranged to trim surplus material from said marginalextension, and means arranged to retract said clampin means for theintroduction the work.

15. A shoe-tri'nming machine comprising a work-support arranged tosupport a marginal extension projecting from the body of` and removal oa shoe, a cutter arranged to trim ,surplus material from said marginalextension, and spring-stressed means arranged to engage the work so asto'funotion as an ed e-gage, a guard for the cutter, and as a c amp topress the work against said work-support.

16. A machine of the character described comprisin means for supportingthe art to be trimme a cutter for trimmin sai part, and a combinedwork-clamp, wor -gage and cutter guard constructed 'and arranged toclamp the work otherwise than by the part to be trimned.

17. A machine of the character described comprising two work-engagingmembers arranged to receive between them a marginal extension projectingfrom the periphery of the outsole of a shoe, and a knife arranged to cutagainst one of said members to trim said extension, one of said membersbeing formed and 'arranged to bear a ainst said bed to trim saidextension, a spring- I stressed guard arranged to cover the cuttingportion of said knife and to tend toward said 'bed, and an anti-frictionroll. carred by said guard and arranged to roll' on said outsole so asto prevent the guard from bearing on said marginal extension.

19. A machine of the character described comprisng a cu-tting bederranged. to engage the crease side of a merginal extension projectinmbeyond the periphery of the outsole of a hoe, a knife arranged to cutagainst seid bed to trim said extension, and e spring-stressed deviceurged normally toward said bed and having one portion errenged to bearon the periphery of the outsole to keep the latter out of the cuttingfield of said knife, said dev'ice having another portion arranged tobear on the trend face of' the outsole to prevent the first said portionfrom clamping said mergimi extension.

20. A machine for trimming the mergimi extension' pro'ecting from theperiphery of the outsole o e Shoe, com rising e cutting bed and a. knifeeri-&nge to cut against the same to trim said extension, and a.spring-stressed device arrenged to ceoperate With seid `bed to clemp theoutsole without clamping said mer 'nal extension.

' 21. A machine o the character described comprising cooperative membersarranged to clemp the mel'gi-nel rtion of the outsole of a, Shoe, a knie errengeol 'to cut against one of seid; clamping members to trim ofi'any portion of a. Shoe element projeeting letereily beyond the peripheryof seid. outsole, end e gege arreed to guide the outsoie eo es to keepit ear of said ARTHUR BATES,

